Siemens TC37 Module - Combining at Commands on the same Command Line; Entering Successive at Commands on Separate Lines

AT Command Set
TC3X_ATC_01_V04.00 Page 12 of 204 29.05.2002
1.4.2 Combining AT commands on the same command line
You may enter several AT commands on the same line. This eliminates the need to type the "AT" or
"at" prefix before each command. Instead, it is only needed once at the beginning of the command
line. Use a semicolon as command delimiter.
The command line buffer accepts a maximum of 391 characters. If this number is exceeded none of
the commands will be executed and TA returns ERROR.
The table below lists the AT commands you cannot enter together with other commands on the same
line. Otherwise, the responses may not be in the expected order.
Table 3: Illegal combinations of AT commands
V.25ter commands With
FAX commands, Prefix AT+F
GSM 7.07 commands With
Siemens commands, Prefix AT^S
GSM 7.05 commands (SMS) --- To be used standalone
Commands starting with AT& --- To be used standalone
AT+IPR --- To be used standalone
Note: Generally, appending the same or mixed AT commands should be avoided. If nevertheless
you need to do enter several commands on the same line, note that the number of subsequent
commands is limited.
1.4.3 Entering successive AT commands on separate lines
When you enter a series of AT commands on separate lines, leave a pause between the preceding
and the following command until OK appears. This avoids sending too many AT commands at a time
without waiting for a response for each.